Description
A flaw has been found in Verysync 微力同步 up to 2.21.3. This impacts an unknown function of the file /rest/f/api/resources/f96956469e7be39d/tmp/text.txt?override=false of the component Web Administration Module. Executing manipulation can lead to unrestricted upload. The attack may be performed from remote. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
References (4)
Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry
https://vuldb.com/?id.334619
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.334619
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.699539
Exploit, Issue Tracking, Third Party Advisory exploit
issue-tracking
https://github.com/jjjjj-zr/jjjjjzr/issues/10
Scores
CVSS v3
6.3
EPSS
0.0031
EPSS Percentile
22.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-284
CWE-434
Status
published
Products (1)
verysync/verysync
< 2.21.3
Published
Dec 07, 2025
Tracked Since
Feb 18, 2026